Deodorizing accessary for water closets

Abstract

An improvement directed to toilet deodorizers, ventilators and air fresheners of the type which induce odorous air from the toilet bowl via the water tank overflow conduit. Such accessaries are subject to water vapor intrusion from the water tank. A normally-closed air valve means impedes the water vapor intrusion when the accessary is not in use.

What is claimed is: 
     
       1. A deodorizing accessary for water closet including a toilet bowl, water tank and water tank cover, said water tank including an overflow conduit, whereby water in excess of the desired water level may be dispensed into said toilet bowl, and through which odorous air may be induced from said toilet bowl, said water tank also including a flushing mechanism whereby water may be discharged into said toilet bowl so as to flush said toilet bowl, and an air space above the water level, said accessary comprising air blower means having an inlet communication with said overflow conduit whereby odorous air may be induced from said toilet bowl, control means operable to initiate and terminate the odorous air flow, and air valve means in said inlet communication said air valve means operable to close when said accessary is not in use, retarding the intrusion of water vapor from said water tank into said accessary, said air valve means operable to open so as to pass said odorous air flow when said accessary is in use, said air valve means also operable to open so as to pass air into said water tank air space when said toilet bowl is flushed. 
     
     
       2. The invention as set forth in claim 1, said air valve means also operable to open so as to pass air from said water tank air space when said water tank is filling with water. 
     
     
       3. A deodorizing accessary a water closet including a toilet bowl and a water tank defining an air space above the water level, said water tank including an overflow conduit whereby water in excess of the desired level may overflow into said toilet bowl, and whereby odorous air may be induced from the toilet bowl, a flushing mechanism whereby water may be discharged into said toilet bowl so as to flush the bowl, and a water filling valve means whereby the water tank may be filled with water after the toilet bowl is flushed, said accessary comprising air blower means having an air inlet communication with said overflow conduit, control means operable to initiate and terminate said air blower means whereby the air blower means is operable to induce the flow of odorous air from said toilet bowl through the overflow conduit, and air valve means in said air inlet communication, said air valve means operable to open in response to said flow of odorous air and operable to close in response to the discontinuation of the odorous air flow, so as to retard the intrusion of water into said accessary. 
     
     
       4. The invention as set forth in claim 3, said air valve means also operable to open so as to pass air into said water tank air space when said toilet bowl is flushed. 
     
     
       5. The invention as set forth in claim 3, said air valve means also operable to open so as to pass air from said water tank air space when said water tank is being filled with water.